Suzuki DR-Z400S Tire Size
GarageDex's powersports data shows the Suzuki DR-Z400S runs a 80/100-21 front tire and a 120/90-18 rear tire. Tire sizes vary by year - see the table for each range.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2021-2023 | 80/100-21 | 120/90-18 |
| 2015-2020 | 80/100-M21 | 120/90-M18 |
| 2013-2014 | 80/100-M | 120/90-M18 |
| 2012 | 80/90-21 | 120/90-M8 |
| 2009-2011 | 80/90-M21 | 120/90-M18 |
| 2008 | 80/90-21 | 120/90-18 |
| 2004 | 80/100-21 | 90/120-18 |
398cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your Suzuki DR-Z400S
This bike runs a 80/100-21 up front and a 120/90-18 at the rear. Match the size stamped on the sidewall (or shown in the table) - powersports tires are size-specific, so the numbers matter more than the brand.
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Frequently asked
What tire size does a Suzuki DR-Z400S use?
GarageDex's powersports data shows the Suzuki DR-Z400S runs a 80/100-21 front tire and a 120/90-18 rear tire. Tire sizes vary by year - see the table for each range.
What do the tire numbers mean?
A size like 80/100-21 reads as tread width (mm) / aspect ratio (% of width) - rim diameter (in). Match all three so the tire fits the rim and clears the swingarm and fender.
Do the Suzuki DR-Z400S tire sizes change by year?
Yes - fitment differs across the years we cover: 2021-2023 runs 80/100-21 front / 120/90-18 rear; 2015-2020 runs 80/100-M21 front / 120/90-M18 rear; 2013-2014 runs 80/100-M front / 120/90-M18 rear; 2012 runs 80/90-21 front / 120/90-M8 rear; 2009-2011 runs 80/90-M21 front / 120/90-M18 rear; 2008 runs 80/90-21 front / 120/90-18 rear; 2004 runs 80/100-21 front / 90/120-18 rear. Match your exact year in the table.
Can I fit a different tire size?
Stick to the stock size - it's matched to the rim width, speedometer, and handling. A wider tire can rub the swingarm or fender and throws off the speedo, so only deviate on a shop's advice.